Summary
Sierra High is a 384-student high school serving grades 9–12 in San Bernardino, California. In 2025–26, proficiency was 13% in English Language Arts, 13% in math, and 7% in science—below the state by 37, 25, and 29 percentage points, respectively, and below the San Bernardino City Unified district by 27, 12, and 18 points. The most important finding for families is that scores have improved, but proficiency remains far below state and district levels in all three subjects.
Math is Sierra’s strongest subject relative to nearby traditional high schools, while science is its weakest. Sierra scored below all five nearby traditional high schools in ELA and science; its math score was about 2 points below their average and was second-lowest, just above Pacific High. Graduation has also improved: the 2025–26 rate was 82%, up 13 points from 2021–22, but below the district’s 86%, the state’s 88%, and nearby schools’ rates of 92%–100%. The latest dropout rate was 5%, below the district’s 7% and the state’s 8%. One figure merits checking with the school or source: reported chronic absenteeism was 95%, compared with 29% for the district and 18% for the state.
All three subject scores rose from 2022–23 to 2025–26, with math gaining the most: about 12 points, compared with 5 in ELA and 4 in science. SchoolDigger ranks Sierra in the 21st percentile statewide, with one star; that is up from the 9th percentile in 2021–22, but is the lowest current percentile among nearby ranked schools. Sierra’s 2024–25 student-teacher ratio was 13.8, the lowest among nearby schools, and its reported spending was $39,617 per student, the highest among nearby schools with figures. In 2024–25, 96% of students were free/reduced lunch eligible. SchoolDigger’s subgroup standings show stronger relative performance for Special Education Students: the school ranked in the 44th percentile in 2025–26, compared with its overall 21st percentile. Its African American Students standing moved the other way, falling from the 25th percentile in 2024–25 to the 10th in 2025–26.
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